CN110895988A - Special voltage transformer of portable connects - Google Patents
Special voltage transformer of portable connects Download PDFInfo
- Publication number
- CN110895988A CN110895988A CN201911230542.7A CN201911230542A CN110895988A CN 110895988 A CN110895988 A CN 110895988A CN 201911230542 A CN201911230542 A CN 201911230542A CN 110895988 A CN110895988 A CN 110895988A
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- China
- Prior art keywords
- fuse
- voltage transformer
- fixed
- joint
- joint body
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/20—Instruments transformers
- H01F38/22—Instruments transformers for single phase ac
- H01F38/24—Voltage transformers
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transformers For Measuring Instruments (AREA)
Abstract
The embodiment of the invention discloses a portable special voltage transformer joint, which comprises a T-shaped PT joint body and a fuse wire, wherein the fuse wire is fixedly arranged in a transverse pipe body of the PT joint body, a cable is distributed in a longitudinal pipe body of the PT joint body, and a special terminal at the end part of the cable is fixedly connected with the fuse wire head of the fuse wire; the fuse head and the special terminal are clamped and fixed through a connecting bolt, so that reliable connection is formed between the fuse head and the special terminal; the connecting bolt and the rear plugging cover are detachably and fixedly connected together, and the rear plugging cover is detachably fixed at the right end part of the transverse pipe body of the PT joint body. According to the portable special voltage transformer joint provided by the embodiment of the invention, the parts form effective detachable connection, and the fuse wire can be very stably fixed in the PT joint body. The problems that the PT connector is assembled and disassembled and the fuse wire is replaced complicatedly in the prior art are solved; and the accident rate is reduced, and the stability of the electrical performance is enhanced.
Description
Technical Field
The invention relates to the technical field of power grids, in particular to a portable special voltage transformer joint.
Background
Distribution network automation is an important link of smart grid construction, under the distribution network automation, more and more units of voltage need to be measured and protected, and a voltage transformer cabinet (PT cabinet) is increasingly widely applied as equipment which can not only provide voltage measurement, but also can provide power supply for other electrical equipment. The inside electric elements such as main installation voltage transformer (PT), isolator and arrester of PT cabinet connect through certain mode of connection between various electric elements, realize the function of measuring and protecting.
The PT of current PT cabinet connects for connecting switch wire holder and mutual-inductor wire holder, the structure is as shown in figure 1, includes: a ferrule holder 101, a contact fuse 102, a cable 103, a PT connector body, a pressure plate 104, a hook bolt 105, a wing nut 106, an existing PT connector body 107. The sleeve seat 101 is sleeved in the conventional PT connector body 107, the contact fuse 102 is placed in the sleeve seat 101, and the head of the contact fuse 102 is in the PT connector body 107 and electrically connected to the cable 103 extending out of the PT connector body 107 (specifically, the head of the contact fuse 102 is electrically connected to the Y-shaped terminal at the end of the cable). In order to ensure the connection reliability of the whole PT connector and the PT cabinet body, the PT connector body 107 is finally fixed with the PT cabinet body through the pressing plate 104, the hook bolt 105 and the butterfly nut 106 through the draw hook, so that the connection reliability of the contact fuse 102 and the cable is ensured. However, if the contact fuse 102 is damaged and needs to be replaced, the PT terminal needs to be removed, and the conventional PT terminal is troublesome to remove and is easily damaged when being connected with a PT cabinet and needs to be replaced at any time, thereby affecting the overall electrical performance.
Disclosure of Invention
In order to solve the technical problem, embodiments of the present invention provide a portable dedicated voltage transformer joint that allows a fuse to be replaced without disassembling an overall structure.
The technical scheme of the invention is realized as follows:
the utility model provides a special voltage transformer of portable connects, includes the PT joint body of T shape this internal fuse of installing of PT joint, the fuse installation is fixed in the horizontal body of PT joint body, has laid the cable in its vertical body, the cable includes: specially-made terminals, annealed copper wires and connecting copper pipes; the soft copper wire is coated in the connecting copper pipe, and the end part of the soft copper wire is electrically connected with the special terminal; a section of annealed copper wire is exposed between the special terminal and the connecting copper pipe;
the special terminal is sleeved on the fuse head of the fuse and is clamped and fixed by the connecting bolt, so that the special terminal and the fuse form reliable connection
The connecting bolt and the rear plugging cover are detachably and fixedly connected together, and the rear plugging cover is detachably fixed at the right end part of the transverse pipe body of the PT joint body.
Further, as for the portable special voltage transformer joint, the connecting bolt is composed of a clamping part and a connecting part;
the clamping part is used for clamping and fixing the specially-made terminal on the fuse head part to form reliable connection; the connecting part is used for being detachably and fixedly connected with the rear plugging cover.
Further, as above-mentioned special voltage transformer of portable connects, joint portion includes: a groove and a clamping groove; the groove and the clamping groove are of an integrated structure, the internal space structure formed by the groove and the clamping groove is matched with the outline of one end of the fuse head, and the groove and the fuse head are embedded, clamped and fixed together.
Further, as above, the portable special voltage transformer connector further comprises a rear protective cap, wherein the rear protective cap seals the rear blocking cover in the PT connector body and detachably fixes the right end of the transverse pipe body of the PT connector body.
Further, as above, the portable special voltage transformer joint is provided with the grounding bolt on the pipe wall of the longitudinal pipe body of the PT joint body.
Further, in the portable dedicated voltage transformer joint, the fuse wire clamping cap of the fuse wire is fixed in the transverse pipe body of the PT joint body through the PT sleeve, the fixing sleeve and the fuse wire pressing plate;
the fixed sleeve is fixed on the inner wall of the PT sleeve, and the head of the fuse wire penetrates through the central hole of the fuse wire pressure plate and then is clamped and fixed with the connecting bolt;
after the fuse wire clamping cap is clamped by the fuse wire pressing disc, the outer wall of the fuse wire pressing disc is in threaded connection with the inner wall of the fixing sleeve;
the PT sleeve pipe with the PT connects the horizontal body left end tip of body can dismantle fixed connection.
Further, as described above for the portable dedicated voltage transformer connector, the fuse pressing plate extends circumferentially with a snap ring having an inner contour adapted to an outer contour of the fuse cap.
According to the portable special voltage transformer joint provided by the embodiment of the invention, the parts form effective detachable connection, and the fuse wire can be very stably fixed in the PT joint body. When the fuse wire needs to be replaced, the rear plug cover of the connector can be directly opened, the connecting bolt is loosened, and the fuse wire can be directly taken out without disassembling the connector, so that the problems of assembling and disassembling a PT connector and fussy replacing the fuse wire in the prior art are solved; in addition, the cabinet body and the joint are further strengthened in connection and matching, so that the accident rate is reduced, and the stability of the electrical performance is enhanced.
Drawings
FIG. 1 is a schematic diagram illustrating installation of a connector of a voltage transformer cabinet in the prior art;
FIG. 2 is a schematic diagram of a connector structure of a voltage transformer cabinet in the prior art;
FIG. 3 is a schematic diagram illustrating a step of installing a portable dedicated voltage transformer connector according to an embodiment of the present application;
fig. 4 is a schematic diagram of a connector structure of a portable dedicated voltage transformer according to an embodiment of the present application;
FIG. 5 is a schematic structural view of a cable arranged in the PT connector body according to the embodiment of the present application;
description of the drawings:
101-a cannula holder; 102-contact fuse; 103-a linker; 104-a platen; 105-hook bolt; 106-wing nut; 107-existing PT joint body; 1-PT sleeve pipe; 11-fixing the sleeve; 2-a fuse; 21-fuse card cap; 22-fuse head; 3-a fuse platen; 31-a snap ring; 4-PT connector body; 5-a ground bolt; 6-special terminals; 7-annealed copper wire; 8-connecting copper pipes; 9-a cable; 10-connecting bolts; 1011-groove; 1012-card slot; 1013-bolt head; 11-rear blocking cover; 12-rear protective cap.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Also, unless explicitly described, the word "comprise" and variations such as "comprises" or "comprising", will be understood to imply the inclusion of stated elements but not the exclusion of any other elements.
Various components are described in embodiments of the present invention with "first", "second", "third", and the like, but these components should not be limited by these terms. These terms are only used to distinguish one component from another. Also, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
In addition, the following embodiments of the present invention may be implemented individually, or may be implemented in combination with each other, and the embodiments of the present invention are not limited in this respect.
Hereinafter, the portable dedicated voltage transformer joint provided by the embodiment of the invention will be described in detail.
Example 1:
FIG. 3 is a schematic diagram illustrating a step of installing a portable dedicated voltage transformer connector according to an embodiment of the present application; fig. 4 is a schematic diagram of a connector structure of a portable dedicated voltage transformer according to an embodiment of the present application; as shown in fig. 3 and 4, the portable dedicated voltage transformer joint provided by the embodiment of the present application includes: the PT connector comprises a T-shaped PT connector body 4, a fuse wire 2 is installed in the PT connector body 4, the fuse wire 2 is installed and fixed in a transverse pipe body of the PT connector body 4, a cable 9 is arranged in a longitudinal pipe body, and fig. 5 is a schematic structural diagram of the cable arranged in the PT connector body in the embodiment of the application; as shown in fig. 5, the cable 9 includes: a special terminal 6, a soft copper wire 7 and a connecting copper pipe 8; the annealed copper wire 7 is wrapped in the connecting copper tube 8, and the upper end of the annealed copper wire 7 is electrically connected with the specially-made terminal 6; a section of annealed copper wire 7 is exposed between the special terminal 6 and the connecting copper pipe 8.
The special terminal 6 is tightly contacted with the fuse head 22 of the fuse 2;
the fuse head 22 and the special terminal 6 are clamped and fixed through the connecting bolt 10, so that the fuse head and the special terminal form reliable connection;
the connecting bolt 10 and the rear plugging cover 11 can be detachably and fixedly connected together, and the rear plugging cover 11 can be detachably fixed at the right end part of the transverse pipe body of the PT joint body 4.
The portable special voltage transformer joint provided by the embodiment of the invention is realized by improving the structure of the PT joint body 4 and the cable structure arranged in the PT joint body.
First, the first improvement of the present invention is an improvement of the PT joint body 4, specifically: the PT connector body 4 is improved by detachably connecting and fixing the connecting bolt 10 and the rear blanking cover 11 with the PT connector body 4.
When the fuse wire 2 needs to be replaced, the connecting bolt 10 and the rear blanking cover 11 are detached, and then the fuse wire 2 is replaced. However, since the existing Y-terminal is in close contact with the fuse head 22, in order to remove the damaged fuse, the existing Y-terminal must be removed from the fuse head 22, and the existing cable structure has its soft copper wires entirely covered by the connecting copper tubes and is electrically connected to the Y-terminal only at the end, so that the whole cable is not easily removed from the fuse head 22.
Based on the improvement, the second part of the invention is to improve the structure of the cable so as to match the improvement of the PT structure body of the invention to realize the purpose of easy disassembly. The specific improvement is as follows: a section of annealed copper wire 7 is exposed between the special terminal 6 and the connecting copper tube 8, and the exposed annealed copper wire can be bent and turned over at will, so that the annealed copper wire can be conveniently taken down from the fuse head 22, and the purpose of conveniently replacing the fuse is achieved.
According to the portable special voltage transformer joint provided by the embodiment of the invention, the parts are detachably connected, and the fuse wire is very stably fixed in the PT joint body 4. When the fuse wire needs to be replaced, the component connected with the PT connector body 4 can be taken out of the transverse pipe body and the component connected with the fuse wire can be taken out only by disassembling the component connected with the PT connector body, so that the problem that the PT connector is complex to install and disassemble in the prior art is solved; in addition, the cabinet body and the joint are further strengthened in connection and matching, so that the accident rate is reduced, and the stability of the electrical performance is enhanced.
Example 2:
the embodiment of the application provides a specific structure of a connecting bolt 10 on the basis of embodiment 1, wherein the connecting bolt 10 is composed of a clamping part and a connecting part;
the clamping part is used for tightly contacting the special terminal 6 with the fuse head part 22 to form reliable connection; the connecting part is used for forming detachable fixed connection with the rear plugging cover 11.
According to the portable special voltage transformer joint provided by the embodiment of the application, the specially-made terminal 6 is in close contact with the fuse head 22 through the clamping part, so that the stability of the electrical performance is further enhanced; make the special voltage transformer of portable that this application provided connect convenient dismantlement more through connecting portion simultaneously.
Example 3:
on the basis of embodiment 2, the embodiment of the present application is to make a more excellent improvement on the clamping portion, specifically:
the clamping portion includes: a groove 1011 and a slot 1012; the groove 1011 and the clamping groove 1012 are of an integral structure, the internal space structure formed by the groove is matched with the outline of one end of the fuse head 22, and the groove and the fuse head are embedded, clamped and fixed together.
The special voltage transformer of portable that this application embodiment provided connects provides a concrete joint portion structure, promptly: the clamping portion is matched with the outline of one end of the fuse head 22 through an internal space structure formed by the groove 1011 and the clamping groove 1012, so that the fuse head 22 can be tightly embedded in the clamping portion, and the stability of the electrical performance is further improved.
Example 4:
on the basis of the embodiment, the embodiment of the application also adds the rear protective cap 12, and the rear protective cap 12 seals the rear blocking cover 11 in the PT connector body 4 and detachably fixes the right end part of the transverse pipe body of the PT connector body 4.
The special voltage transformer of portable that this application embodiment provided connects, through back helmet 12 with 2 stifled sealings of fuse in PT connects body 4, avoided the influence that dust, steam etc. caused the fuse to the stability of electrical property has further been improved.
Example 5:
on the basis of the embodiment, the grounding bolt 5 is additionally arranged, the grounding bolt 5 is arranged on the pipe wall of the longitudinal pipe body of the PT connector body 4, and therefore the stability of the whole portable special voltage transformer connector is further improved.
Example 6:
on the basis of any one of the above embodiments, the embodiment of the present application further improves the T-junction body 4 to improve the stability of the fuse 2. The method specifically comprises the following steps: the fuse wire clamping cap 21 of the fuse wire 2 is fixed in the transverse pipe body of the PT joint body 4 through the PT sleeve 1, the fixing sleeve 11 and the fuse wire pressing plate 3;
the fixed sleeve 11 is fixed on the inner wall of the PT sleeve 1, and the fuse head 22 passes through the central hole of the fuse pressing plate 3 and then is clamped and fixed with the connecting bolt 10;
after the fuse wire pressing plate 3 clamps the fuse wire clamping cap 11, the outer wall of the fuse wire pressing plate is in threaded connection with the inner wall of the fixed sleeve 11;
the PT sleeve 1 and the end part of the left end of the transverse pipe body of the PT joint body 4 are detachably and fixedly connected.
The special voltage transformer of portable that this application embodiment provided connects, fuse head 22 to the fuse has not only carried out effective fixed, make fuse head 22 and purpose-built terminal form good reliability and be connected, and through the effective fixed to fuse card cap 22, make the fuse all realize stable fixed in the left and right directions, thereby to its dual fixed effect of having arrived to the fuse, and then improved the stability of fuse greatly, thereby make the electric property stability of whole structure very good.
Example 7:
on the basis of embodiment 6, the application further improves the fuse platen 3, namely: a snap ring 31 extends on the circumference of the fuse pressing plate 3, the inner contour of the snap ring 31 is matched with the outer contour of the fuse clamping cap 21, and the stability of the fuse is further improved through the mutual matching of the structures of the snap ring and the fuse clamping cap, so that the stability of the electrical performance of the whole structure is better.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Claims (7)
1. The utility model provides a special voltage transformer of portable connects, PT joint body (4) including the T shape install fuse (2) in PT joint body (4), fuse (2) installation is fixed in the horizontal body of PT joint body (4), has laid cable (9) in its vertical body, its characterized in that, cable (9) include: a special terminal (6), a soft copper wire (7) and a connecting copper pipe (8); the annealed copper wire (7) is wrapped in the connecting copper pipe (8), and the end part of the annealed copper wire (7) is electrically connected with the specially-made terminal (6); a section of annealed copper wire (7) is exposed between the specially-made terminal (6) and the connecting copper pipe (8);
the specially-made terminal (6) is sleeved on the fuse head (22) of the fuse (2) and is clamped and fixed by the connecting bolt (10), so that the specially-made terminal and the connecting bolt form reliable connection;
connecting bolt (10) can be dismantled the rigid coupling together with back blanking cover (11), back blanking cover (11) detachably is fixed the horizontal body right-hand member tip of PT joint body (4).
2. The portable dedicated voltage transformer joint according to claim 1, wherein the connecting bolt (10) is composed of a snap-in portion and a connecting portion;
the clamping part is used for clamping and fixing the specially-made terminal (6) on the fuse head (22) to form reliable connection; the connecting part is used for being detachably and fixedly connected with the rear plugging cover (11).
3. The portable dedicated voltage transformer joint according to claim 2, wherein said clamping portion comprises: a groove (1011) and a clamping groove (1012); the groove (1011) and the clamping groove (1012) are of an integrated structure, the internal space structure formed by the groove is matched with the outline of one end of the fuse head (22), and the groove and the fuse head are embedded, clamped and fixed together.
4. The portable dedicated voltage transformer joint according to claim 1, further comprising a rear cap (12), wherein the rear cap (12) seals the rear blocking cover (11) in the PT joint body (4) and detachably fixes the right end of the transverse pipe body of the PT joint body (4).
5. The portable dedicated voltage transformer joint according to claim 1, wherein a grounding bolt (5) is arranged on the pipe wall of the longitudinal pipe body of the PT joint body (4).
6. The portable dedicated voltage transformer joint according to any one of claims 1-5, wherein the fuse clip cap (21) of the fuse (2) is fixed in the transverse tube body of the PT joint body (4) through a PT sleeve (1), a fixing sleeve (11) and a fuse pressing plate (3);
the fixing sleeve (11) is fixed on the inner wall of the PT sleeve (1), and the fuse head (22) penetrates through a central hole of the fuse pressing plate (3) and then is clamped and fixed with the connecting bolt (10);
after the fuse wire pressing plate (3) clamps the fuse wire clamping cap (11), the outer wall of the fuse wire pressing plate is in threaded connection with the inner wall of the fixed sleeve (11);
the PT sleeve (1) is detachably and fixedly connected with the end part of the left end of the transverse pipe body of the PT joint body (4).
7. The portable dedicated voltage transformer junction according to claim 6, wherein the fuse platen (3) extends circumferentially with a snap ring (31), the inner contour of the snap ring (31) conforming to the outer contour of the fuse card cap (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911230542.7A CN110895988A (en) | 2019-12-05 | 2019-12-05 | Special voltage transformer of portable connects |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911230542.7A CN110895988A (en) | 2019-12-05 | 2019-12-05 | Special voltage transformer of portable connects |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110895988A true CN110895988A (en) | 2020-03-20 |
Family
ID=69788669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911230542.7A Pending CN110895988A (en) | 2019-12-05 | 2019-12-05 | Special voltage transformer of portable connects |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110895988A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112421323A (en) * | 2020-10-15 | 2021-02-26 | 深圳供电局有限公司 | Prefabricated connecting cable for power distribution cabinet |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201859951U (en) * | 2010-06-24 | 2011-06-08 | 杭州华新高科新材料有限公司 | Compound terminal flexible connection structure |
| CN106683862A (en) * | 2017-01-23 | 2017-05-17 | 浙江天际互感器有限公司 | Voltage transformer with elbow plug |
| CN208014541U (en) * | 2018-03-26 | 2018-10-26 | 海南电网有限责任公司电力科学研究院 | A kind of voltage transformer |
-
2019
- 2019-12-05 CN CN201911230542.7A patent/CN110895988A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201859951U (en) * | 2010-06-24 | 2011-06-08 | 杭州华新高科新材料有限公司 | Compound terminal flexible connection structure |
| CN106683862A (en) * | 2017-01-23 | 2017-05-17 | 浙江天际互感器有限公司 | Voltage transformer with elbow plug |
| CN208014541U (en) * | 2018-03-26 | 2018-10-26 | 海南电网有限责任公司电力科学研究院 | A kind of voltage transformer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112421323A (en) * | 2020-10-15 | 2021-02-26 | 深圳供电局有限公司 | Prefabricated connecting cable for power distribution cabinet |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 065300 No. 299, Gongye Third Road, Dachang Hui Autonomous County, Langfang City, Hebei Province Applicant after: Langfang Fangyuan Xinhe Electric Co.,Ltd. Applicant after: BEIJING FANGYUAN ELECTRICAL APPLIANCES Co.,Ltd. Address before: 065300 Gongye 3rd road, Chaobaihe Industrial Zone, Dachang Hui Autonomous County, Langfang City, Hebei Province Applicant before: LANGFANG FANGYUAN XINHE ELECTRIC Co.,Ltd. Applicant before: BEIJING FANGYUAN ELECTRICAL APPLIANCES Co.,Ltd. |
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| CB02 | Change of applicant information | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200320 |
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| RJ01 | Rejection of invention patent application after publication |